#define  _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<ctype.h>
int main()
{
	char arr[30] = "Hi,I am a student.";
	int i = 0;
	while (arr[i])
	{
		if (islower(arr[i]))
		{
			arr[i] = arr[i] - 32;
		}
		i++;
	}
	printf("%s\n", arr);
	return 0;
}